Shoe-sewing machine.



G. L. CORCORAN, G. A. DOBYNE & A. R. SCHOENKY.

SHOE SEWING MACHINE.

APPLICATION FILED JUNE 5.19M.

Patented Sept. 12, 1916.

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G. L. CORCORAN, G. A. DOBYNE & A. R. SCHOENKY. SHOE SEWING MACHINE.

APPLICATION FILED JUNE 5.. 19] I. 1,198,328. Patented Sept. 12, 1916.

9 SHEETS-SHEET 2.

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mfg 60 G. L. CORCORANJE. A. DOBYNE & A. R. SCHOENKY.

SHOE SEWING MACHINE.

APPLICATION FILED JUNE 5, L9H. 1,1 98,328. Patented Sept. 12,1916.

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G. L. CORCORAN, G. A. DOBYNE & A. R. SCHOENKY.

SHOE SEWING MACHINE.

APPLICATION FILED JUNE 5,19]!- 9 SHEETS-SHEET 4.

Patented Sept. 12, 1916.

G. L. CORCORAN, G.- A. DOBYNE 6a A. R. SCHOENKY. SHOE SEWING MACHINE.

APPLICATION FILED IUNE 5, 191l- 1,1 98,328. Patented Sept. 12,1916;

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G. L. CORCORAN, G. A. DOBYNE & A. R. SCHO ENKY. SHOE SEWING MACHINE.

APPLICAHON FILED JUNE 5,1911- 1 ,1 98,328. Patented Sept. 12, 1916. l 9SHEETS-SHEET 6- 3 59". 7T

G. L. CORCORAN, G. A. DOBYNE 6. A. R. SCHOENKY.

SHOE SEWING. MACHINE.

APPLICATION FILED JUNE 5119M.

1,198,328. PatentedSept. 12,1916.

9 SHEETS-SHEET 7.

Wifieesses: lzzfiezzi'o'rs:

sit". awry G. L. CORCORAN, G. A. DOBYNE (Ya A. R. SCHOENKY. SHOE SEWINGMAQHKNE. APPLICATION FILED JUNE 5.19m.

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Patented Sept. 12, 1916.

G. L. CORCORAN, G. A. DOBYNE & A. R. SCHOENKY.

SHOE SEWING MACHINE.

. APPLICATlON FILED JUNE 5,1911. 1 1 98,328, Patented Sept. 12, 1916.

9 SHEETS-SHEET 9. 7 ,9 205 19 Z 5 21 ingQMachine, of -,which thefollowing is a f I ED STATES PATENT OFFICE.

e e-0mm. co'aconh'n, GEORGE A.

11 tosses. i

To]! a/mm i1.- //1r/ r-0nf-crn: lle 'ityknown that ,we, GEORGE L. Conco-(il-JURHH A. Don 'xn, and Arots'r 'fiirnorzxin',citizens of the l'nitedStates, re siding at htLouis in the State of Missouri, have. invented.aa new and useful Shoe-Sewspecification. I

This invention relates'to sole sewing inaehinesgof Ithe type shown and"described in Patent No. l'i'3,870,-April 2(5 1892." In the i machineshownin the patent; when the parts closesa littleb'efore the stitch isset. and re are, in-p isit-ion" with the stitch completed thethread-hickis elosed so as to lockt'he thread, andtherfore the workcannotbe reinoved-jat'. this time; The thread-lock inn-ins closedunti-lthe needle has :drawn a loop of. thread-t-l-irough the work. Insuch a machmerin order-to remove the work. ,the operator n'iuststop the.i'naclune and then turn itlovcr manually to. draw a loop of through.the -Wo1-k.--Such a' machine must therefore be providedwith auxil arymeans 5, in positioneto .release and permitremoval of threadthro,ughthe-work until the threadlock is opened-and then must unhook thethread from theneedle when the workcan be,":ren'1oved.=- Suclranoperation not only requires considerable time, but the work isremoved,with-a-stitch only partially completed; lea ving an unfilledhole in the work.

'lhe -presser-foot is locked during the, oper'ation of the machine andis unlocked during the-feed of theuwork, It cannot be unlocked by itsactuator at the point where the work isremoved, because at this time thework must be locked to furnish anabutment, as tl1'e need1e is-thenpulling a loop of thread fol-lifting thepresser-foot atthistime.Various'means :have'been proposed and pro,- videdfor=permittingremoval'of the work.

. Qhe of theobje cts of thisimention there fore;- is to construct amachine; in'whic'h -the instrumentaliti es-.a-nd the operating meanstherefoin are so. "constructed and arra nged.

thatthese instrumentalities will be in" position. -to permit-removal of.the work at the completion of the stitch.

Another object is to provide means where- I v DOBYNE, AND AUGUsT R.SCHOENKY, or sit. Lotus, MISSQURI. nssrenons T0 CHAMPION SHOE MISSOURI,.A CORPORATION or MISSOpRI. I

SHOE-SEWING MACHINE.

Serial no. 631.299

. specification of Letters Patent, P t i t septvlg', 1916. Applicationfiled June 5, 1911. i Y i i by the machine may jbe automatically stoppedat the 'compltionofthe stitch with the parts in-the positions stated. vIn accordance with this .inyention the instrumentalities and the.actuating. means therefor are so constructed' thafiat the compl'etion 0fthe stitch the a'wl and. the needle will be out of the work-,theresser-foot will be released, and" the thread I controlling mechanismwill be in a position to release the thread. The thread-lock is soarranged as to be open to release the thread while the take-up is at thelimit of its stitch setting stroke. Automatic stopping means areprovided to automatically stop the machine at the completion of thestitch When the treadle i'sreleased. Indicatingmeans may be provided toindicate whenthis point is reached whereby the parts may be brought lntoproper relation byhand.

" Another object is to simplify the machine by combining the functionsof certain parts, thus-dispensing with a number of the parts, andpermitting the elements to be arranged in a newirelation.

In accordance with this invention the 30 tln'emlcontrolling mechanismcomprises a take-up member and a'thread-lock. The take upmember has atwo-fold function, namely that of taking up and setting the stitch. andthat" of a thread measuring means. In the operation of forming a istitch the thread is taken up and set, the lock being closed at thistime, and then the lock opens'to permit the take-up member todraw threadfrom the-source of supply. 90 The thread-lockis connected with a workengaging member, 'such as the presser-foot, so thatthe thread-lock willhave a variable action to time the opening ofv the lock, and thus theamount of thread drawn is in-ac-. cordance with thethickness of thework.

This leaves the threa dslock open atthe com- --.plet'ioi1. ofthefstitch. to release the thread,

and the connection between the lock and-the presser-foot permits furtheropening, for the purpose of removing the work.

Another object is to improve and simplify the operation of the needleand its guide so as to prevent the thread from catching on the needleafter it has once been discharged therefrom. Other objects are toimprove the con-' struction of the shuttle, the thread lifter iiechiinism, and-the work feeding mechanism.--=;

Furth'er' ohjects will-appear from the detail description taken inconnection with theaccompanying drawings in which:

sewing machineembodying this invention, Fig. 2 is a plan view, the camsbeing shown dotted, Fig. 3 is a side elevation from the left side. ofthe machine, Fig. 4 is a side elevation from the right side ,of themachine,

Fig. 5 is a detail plan View of the thread controlling"mechanis'm, Fig.6 is a detail s'ide elevation showingthe relation and positi'ons ofparts, Fig. 7 is a detail of the thread controlling mechanism, .the view'heing'taken from the opposite side of said mechanism, Fig. 8 is aperspective view. of

the elements of-the thread lock, Fig. 9 is a section on" the line 9 Fig.1 showing the work feeding mechanism, Fig. 10 is an elevation, and Fig.11 is a section on the line 11-11 Fig; 10 showing the shuttle race,

Figs. 12 and 13 are detail front and side.

vertical longitudinal section through the stopping mechanism, Fig. 19 isa section on the,line 1919 Fig. 18, -and Fig. 20 is adetail perspectiveview of the stopping mechanism. v

" Referring to the accompanylng drawings,

designates-2. column upon which is mounted a head or base 26 havingformed thereon a lug 27 provided "with bearings for a su'pportingshaft28. A pair of brackets 29 are-bolted to the head and are provided withbearings for a maindriving shaft 30.

"The right-hand bracket 29 has formed thereon a forwardly extending lug31 to provide a bearing for the take-up actuating, lever. The head 26has cast integral there-- with a ing 32 provided-with an upwardlyextending portion 33 formingbearings for various mechanisms hereinafterto be -de- {.scribed. A forwardly extending lug 34 is also cast integralwith the head and provides a support for the awl feed mechanism. Acasting 35'is secured tothe lug 32 by means of a bolt. 36 extendingthrough both parts and a screw 37," the casting and the portion 33forming together spaced side members as seen in- Figs. 1 and 2. Thecasting 35 has cast integral therewith the bear ing 38 for the shuttleactuator shaft and the the head 26 :and is providedlwith an arm 42shuttle race 39. A bracket 4() is bolted to forming a beariiig. for thetake-up shaft, and with a forwardly extending arm 43 forming a bearingfor the-feed slide actuating lever.

Figure 1 is a front elevatlon of a sole The main drive shaft 30 haskeyed thereto three camwheels A, .B and C. These cam wheels are shown indetail in- Figs. 14, 15 and Him the same relative positions which theyoccupy .on the drive shaft and in the position when the machine, comesto rest, at whichtime the key on theshaft isin its lower verticalposition. 1 The com A is provided with four cam grooves a, a, a and aadapted to actuate the shuttle, the needle,

the thread holderfand the looper respectively. The cam B is providedwith three cam grooves 12, b and b adapted to.actu-.

ate the .awl,- the presser-foot, and the loo r respectively. The camCiiprofided with three camgrooves c, c and 0 adapted to actuate thethread-liften thetake-up, and the feed slide respectively; 'In- Figs;14,15 and 16 the cam rolls are;- shown in the positions they occupy intheir respective cam' grooves when the machine comes'to rest.

Fig. 17 is a diagram showingthe relative positions and movements'of'theshuttle,--the needle, the awl, the presser-foot, the thread lifter orspreader, and the; take-up during. a complete cycle of operationsduringfthe' formation of a stitch; ,"The, motion is in the directionofthe arrow, and the verticallines show the various "angularpositions'joffthe drive shaft and the cams thereon, the =0? positionbeing taken- .as.'the position of the key and keyways for thelfirstfive'members,"

and from the-keyin 'the' direction of rotation for'the tflkefllpk Theposition at' which the stitch is completed'and atwhich the machine stopsis indicated on the dialgram by, the line Machine stops. .The

downward *movements on the diagram designate the following motions?shuttle,

thread taking movement needle, piercing movement; awl,PIGIfClHg-HIOVGITXEDS;

presser-foot, clamping movement; lifter,

downward movement; take-up, thread giv-- ing movement. I

The stitch forming; mechanism.' -Referring to Figs. 1 to'.4 inclusiveand'12- and. 13, a stub shaft 50 is mounted in the cast-.

ing 35 and supports the needle and'the".

needle guide so I ents 51 and "'55 for oscillat-ing movemen thereon.,Acurved hook needle 52 is clamped in the needle segment and extendsthrough, the guide. 56'. The

needle segment; is provided with gear teeth meshing with" correspondingteeth on a needle actuating lever 53 pivoted on'the shaft 28 andprovided with. a cam roll 54 engaging the cam groove ak The'needle guidesegment 55 is provided with a pin 58' adaptedto be engaged by ashoulder59 on the needle segment, and with teeth meshing with a gear on a shaft60 mounted in the casting 35. A spring 61 secured at one end to theshaft 60 and at its other end to 'a. pin '62 holds the pin 58 inengagement with the shoulder 59 and holds the guide yieldin'gly -in saidpatent.

011' the. upper face of the work when the needle isiin'th'e Work.

" Referring to Figs. 1 to 4 inclusive and 10 and 11, the shuttle casingor race is shown struction and is provided with an annular-- flange 62 Acap plate 63 is screwed to the casing and operates to retain the shuttlein position. The shuttle race is provided with a liner composed of asection '61 for the shuttle race proper. and of a shank 65 for theshuttle actuator shaft. This liner forms a shoulderGG adapted to engageone face of the flange '02, and the cap plate 03 is arranged to retainboth the shuttle and the liner in position, the liner being kept fromrotating by a dowel 61. The-shuttle actuator shaft is provided with abevel gear 67 adapted to mesh with a segmental rack on' theshuttleactuating lever 68 which is pivoted on the shaft :28 and provided with acam roll 69 adapted to engage the. cam groove 0.. By providing theshuttle race with the removable liner it is necessary to replace onlythis liner when the shuttle race wears down, and it is not necessary toreplace the entire casting At the same time the liner and cap plate 6?)furnish cooperating shoulders forming bearings for theshuttle.

The thread lifter 70 is mounted upon the arm 71 of an actuating leverwhich is piv-.

oted upon a shaft 78 supported at one end in the lug 33 and at the otherend in a bracket 77 connecting the shaft 7 with a shaft 79. Theactuating lever is provided with ears 72 which embrace the lug 31-3. andwith a rcarwardly extending arm T l provided with acam roll 74 engagingthe cam groove 0. The flat shank T5 of the litter is adjustablv mountedin a guide or groove cut in the forward end of the arm T1. and isslottel to receive a' clan'iping screw 70. By means of this constructionthe lifter can be adjusted vertically in its actuator, and suchadjustment will not throw it out of alinement, since the flat shank andthe guide groove will guide it in its movements.

The thread holder and the looper are of substantially the samecimstriu-tion as shown The thread holder is guided in ways in thecasting and is provided with a cam roll engaging the cam groove (i Thelooper 82 is mounted in a looper bar 83 guided in acarrier 81 which ismounted for swinging movement in a horizontal plane upon a verticalpivot 81* on the head 26. The looper bar is reciprocated in its carrierby means of an actuating leverSG pivoted upon the head and provided-witha cam roll ST-engaging the cam groove of. Since the thread holder andlooper are of the same construction as that shown in the. patent,further detailed (le.

scription of their construction or operation will b unnecessary. i v

' The operation ofthe needle is different fromthat of the patent. Inthepatented construction the needle guide is actuated positively in bothdirections and this guide is moved forward and the needlebackward sothat the guide will coverthe hook of the needle after the thread isdischarged therefrom. In accordance with this invention the rise m ofthe cam groove a (Fig. 1-1) causes the needle to draw a loop of threadthrough the work; as the thread is taken by the lifter and the shuttle,the cam portion -n causes the needle to move forward for a shortdistance so as to completelydischarge the thread from the hook. andthereafter the cam portion '0 causes the needle to be drawn backcompletely and out of the way so as to prevent catching of the. threadon the hook. This operation of the needle with respect to the shuttleand lifter is well illustrated in the diagram Fig. 17.' The thread guideis moved toward the work by means of spring 61' and lifted away from thework by the needle guide. This. construction therefore results insimplification of parts. since it dispenses with ahsepa gig cam grooveand actuator for the tlllbu guide. I

7711' work fee/Zing mrZ wwcha-n-is'mtlleferring to Figs. 1 to 1inclusive and .Fig. 5). the forwardly extending lug 31 forms a guide 100for a feed slide 101. Thisfeed slide carries a post 102 forming anadjustable support for the awl and its carrier or segment.v The awl 103is clamped in the awl segment 104 which is loosely mounted foroscillating movement upon a stub shaft in the upper end of the post. Theawl segment is provided with gear teeth" meshing with a segmental rackon the-awl actuating lever 105 which is pivoted upon the shaft 528 andis provided with a cam roll 1O(i en-V Illi engaging the guideway 111.The guideway 111 is cut on the arc of a circle having the pivot 112 asits center so as to prevent shifting of the awl Outof'alinement with theneedle when the block 113 is adjusted in the guide way." The guideway111 is cut in the lowerface of th. arm 110. and the .upper face of thelink therefore bears againstthe' lower face of the arm. An arm 114 issecured to and preferably formed integral with the link 112' andisspaced therefrom so as to extend over the upper faceof "the arm 110, andforms a handle by means of which the block 113 may be shifted in theguideway. This arm is displaced with respect to the link so that theblock may be moved from the pivot of the actuating lever and beyond.This construction is advantageous, since it permits the feed of the workto be adjusted from practically zero to a maximum. If the arm 111 werein alinement \ijth the link, then it would be impossible tomove theblock near the center of the actuating lever, since the edge of the armwould'engage the pivotal support or hearing for the actuating leverbefore the block would reach the pivot. However by displacing thearmwith respect to the link,

this block can be moved up tothe very center of the lever so that thefeed can be adjusted to practically zero. The link 112 and the armconnected thereto embrace the lever so as to'form a snug fit, and theupper face of the lever is provided with a plurality of holes 115adapted to receive. stop pins 115 for locating the arm 114 and the linkto which it is connected.

The pivot bolt 112 passes through a cylindrical block 116 which ismounted for sliding movement in the post 102 and the link is locked onthe pivot by means of lock nuts 11?. The cylindrical block is providedwith a vertical guideway 118 with which cooperates the pin 119 of aneccentric 12) rotatably mounted in the post 102. part of the eccentricshank is threaded at 121 and the post is correspondingly tappedto,secure the eccentric in position in the post. The eccentric isprovided with a hexagonal head 122 so that it may be engaged by awrench\ and be turned. The eccentric is bored axially to receive alocking pin 123 which is threaded at 121 into the eccentric and isprovided with an angular head 125 adapted to be. engaged by a wrench.The block may be moved in the post by turning the eccentric. and may belocked in position by means of the locking pin 1.23. this locking pinengagingthe bottom of the guide in the block so as to firmly clamp the,eccentric andthe block in adjusted position in their hearing in thepost. By means of this construction the awl may be adjusted to a'line itwith the needle. and in view of the eccentric connection this adjustmentcan be made exceedingly accurate and fine. The heads 122 and 125 extendto the front of the machine so as to be readily accessible from thefront of the machine.

' needle. and with a lug 130 forming-a gage for the edge of the .sole.The presser-foot 131 is pivotally mounted upon the shaft 79 supported atone end of the log 32 and at Ihe other end in the bracket 77. and thispresserfoot has a rearwardly extending arm 1 3"! rigidly connectedthereto. An arm loosely mounted upon the shaft TH and is yieldinglyconnected to thearm 1 22 by means of a link 134. a spring 135 and anadjusting nut as in said patent. The arm 133 is'provided with a rack orratchet 136 adapted to be engaged by a pawl or dog 137 mounted upon anactuating lever 138 pivoted at its rear end on the head 26. Aspring 139bears on the (log and throws it into engagement with the rack and theactuating lever is provided with a' cam roll 140 engaging the cam groove7) The arm 132;

is also provided with a rack 141 adapted to be engaged by a dog 142which is held in engagement therewith by means of a spring 113. A fixedpin 144 on the lug 32 is adapted to be engaged by the dog 137' so as tothrow it out of engagement with the rack 136 when the actuating lever138 is moved to its lowered position. The lever 1 is provided with aheel 145 adapted to engage the tail-piece 146 on the dog 142 to throw itout of engagement with the rack Hi. In this way both dogs are thrown outof engagement with their racks when the actuating lever is moved tolowered position by its cam. A link 148' connects the arm 1 with an arm149 on a shaft 150. and a comparatively light spring 151 hearing at oneend on the guideway 100 and at its other end against the lower face ofthe arm 1H) tends to rotate the shaft 150 clockwise. and

thus the spring acting through the linkage connection 143 with the arm132 holds the. presser-foot with a light pressure on the work. A link orrod 14''? connects the arm 132 with the treadle so that the presser-footmay beraised manually. I

In the operation of this presser-foot mech anism as in said patent thepresser-foot is held on the work under increased pressure and locked inposition. except that during the feeding operation the presser-foot isunlocked and the increased pressure released so that the presser-footwill be only under the tension of the light spring 151 during suchfeeding olneration. This is accomplished by the cam groove 7) whichraises the lever 138 so that the dog 37 will engage the rack 136 andforce the presser-fwt on the work against the tension of the strongspring 135. while the dog will lock the presser-foot under suchincreased pressure; During the feeding operation however the portionp ofthe cam groove 7/ (Fig. 15) comes into action and throws the actuatorlever down to the position shown in Fig. 6. so as to unlock and releasethe presscr-foot. In accordance with this invention however thepresser-foot is not only released during the feeding'movement, but alsowhen the machirie comes to rest. For this purpose the cam groove 6 isprovided with a short portion 9 adapted to drop the actuating leverl138tothe position shown in Fig. 6, so as "to unlock and release theresser-foot and permit it to be raised from the work by the treadle.This release takes place at the completion ofthe stitch as will be seenfrom Fig. 17. During the operation of the machine the release of thepresser-foot at the completion of the stitch is not detrimen-- tal,since the release is only of very short duration, due to the shortlength of the cam portion 9.

The thread 'controlting me0ham'sm.-The

The thread-lock is arranged to lock or clamp be engaged by a toe on ashereinafter described.

the thread while the take-up member operates to take up the thread andset the stitch,

and the thread-lock opens thereafter during the latter part of themovement of the takeup member to permit said member to draw thread fromthe source of supply.

Referring to Figs. "1 to 8 inclusive the shaft 150 extends through thelug 32 and has keyed thereto one of the members or elements 160 ofthethread-lock. The cooperating member or element 161 of the thread-lock isloosely mounted upon the shaft 150 so as to be capable of angulardisplacement with respect to the member 160, and is provided with a roll162- adapted'to the take-up member The lock member 160 is. provided witha cam groove 163 extending across its face and the lock member 161 isprovided with cam projections 164 adapted to coliperate with the groove163.

The projections 164 consist of steel balls loosely mounted insubstantially semi- .spherical cavities inthe member 161, the -cavit1esbeing slightly deeper than the radii of the balls, and the edges of thecavities being peened over to hold the balls loosely in place. Theinside face of the member 161 isbeveled at 165 adjacent to shaft 150 soas to prevent binding or cutting of the thread@ .The members 160 and.161 are placed in coiiperative relation on the shaft 150 with the balls164 in the groove 163,

and a spring 166 hearing at one end against the member 161 and at theother end against a nut'167' is arrangedto hold the members in yieldingengagement. The tension of the spring may beadjusted by means of; thenut 167 which is provided with a lock-nut 168. l The groove 163 has itsedges beveled as shown in Fig.8 so as to permit the balls to ride easilyon the cam portion. If one of the lock members is rotated with relationto the other, the ballswill ride up on the faces of the cam groove so asto separate the thread engaging faces a distance depending upon theangular displacement of these lockmembers. If these lock members arefreed, the spring 166 will-tend to move 166, and that the spring willreturnthem into engagement. 1

A take-up shaft 169 is supported in bear I 4 ings in the lug 32 and inthe bracket 42.

This shaft has secured thereto'an arm" 170 which 1s connected by alink171 with an arm 172 of an actuator lever mounted upon.

a shaft 173 in the lug 31'. The other arm 17 at of this lever isprovided with. a cam roll 175 engaging the-cam groove 0 An arm 176.-

is rigidly. secured to the take-up shaft 169 to move-therewith, and atake-up arm or member 177 provided at its end with 'a thread roll orpulley 178 is loosely mounted on thetake-up' shaft.- A threaded link 179V is pivotally connected atone end to the arm- 176 and passes through atrunnion member 180 pivotally connected to the take-up arm at 181. Thelinkpasses loosely through the trunnion member and is provided with nuts182 arranged to adjustably .connect the link with the trunnion. memberand lock it in position after it is adjusted. The take-up arm 177 isprovided with atoe '183 which is adapted to engage the roll 162 on thelockmember 161. The thread t'passes from the source of supply through .asuitable tension device (not shown), through the wax-pot, through a tube184, between the lock members,- over a loose guide pulley 185, over thepulley 178 on the take-uparm, through the eye in the looper, and throughthe slot 'in the work support 129. "The pulley 185 is provided with a.bridge 185 (Fig. 5) to hold the thread in place.

.The operation of the thread controlling h mechanism is as follows:After a loop ,of thread is on the shuttle and ready to be dischargedtherefrom, the take-up cam groove 0 will through its connections operatethe take-up arm 17 7 so as to moveit down and take up the thread. 'Atthe beginning of the take-up movement the take-up arm will be raisedfrom the position .shown inthe drawings, and the toe 183 will be out ofengagement with the roll 162 so that the spring 166 'will clamp the lockmembers together to-firmly lock or clamp the thread. The thread willthus be clamped at a point between the take-up arm and the source ofafter the stitch has beerrset, the toe 183 will engage the roll 162 andfurther movement- -0f the take-up arm will cause the toe to rotatethelock member 161 counter-clockwpise and spread the lock members apartin the manner hereinhefore described so as to release or unclamp thethread. The thread being thus released, the take-up arm willoperateduring the last part of its stroke to draw or measure thread forthe next stitch At the limit of the stroke of the take-up arm thethreadlock will be opened to release the thread. As the take-up armstarts to move back, the toe will in the first part of its movement moveout of engagement with the roll on the lock member and thus thespring-16G will operate to move this lock member back in position toclamp the thuead. .ln referring to Fig. 17 it will be seen that thetake-up arm is'given two preliminary move ments during the first part ofthe cycle of operations of forming a stitch. The first movement is forthe purpose of releasing the locking member 161 so as to clamp thethread and for the purpose of relieving the tension of the thread, andthe purpose of the second movementis to give up thread to the looper.The third or final movement is the one in which the thread is given upto the shuttle.

It will thus be seen that the take-up arm performs the double functionof taking up and setting the stitch, and of drawing or measuring threadfrom the source of supply. Different thicknesms of stock however requiredifferent amounts of measured thread, and means must be provided forvarying the amount of measured thread in accordance with the thicknessof the stock. This is accomplished as follows: It will be noted that thetake-up arm engages the roLl 10:2 in the. latter part of its stroke. andthat the ta keup arm moves through a fixed arc and to a fixed limitduring its take-up and thread drawing stroke. It will Lherelorr be seenthat if the take-up member could be made to engage the roll earlier orlater in its stroke it would" open the lock earlier or later and thusthe thread drawing movement of the take-up arm would be increased ordecreased. his can be accomplishe lby moving the take-up engagingportion of the lock with respect to the take-up arm. The shaft 150 andthe lock member '160 keyed thereto are connected to the presser-footthrough the lever and link connections 149. ll! 132. Since theworksupport 129 is rigid. the movable work engaging'member orpresser-foot 131 will vary in its position in accordance with thethickness of the work, and thus the lock member 100 connected to thePresser-foot will vary in its position in accordance with the thicknessof the work. member 101 is normally connected to and movable with thelock member 160, this look member and the roll 162 connected therewithwill vary in position with respect to the toe 183 in accordance with thethickness of the work; Thus as the thickness of the work increases theshaft 150 and the roll 162 movable therewith will, be moved in aclockwise direction so as to move the roll 102 to the left Figs. 3 and7, toward the toe 183. In this way the roll 162 will be engaged by thelZOBdS earlier in the movement of the take-up arm so that thethread-lock will he opened earlier and thus the thread drawing movementof .the take-up arm will he increased. A decrease in the thickness ofthe stock will have the reverse effect.

It will therefore be seen that in accordance with this invention thethread is measured automatically in accordance with the thickness of thework so that the lock will be drawn a uniform distance from the surfaceof the work, irrespective of its thick ness. thread drawing action ofthetake-up mechanism, and by giving the thread-lock a variable action soas to release the thread at a variable point. In order to adjust themech anism independent of its automatic means, such for instance as forpreliminary adjustments or for different lengths of stitches, thetake-up arm 177 can be adjusted by lengthening and shortening the link,thereby inde-' pendently adjusting the take-up arm with respect to thethread-lock.

The sto lpz'ny meclumism.-The machine is provided with means forstopping it in a predetermined position. Referring to Figs. 1 to tinclusive and 18 to 20 inclusive, 200 designates a handwheel mounted onthe left-hand end of the drive shaft 30 so that the machine may heturned over by hand. An indicating device or pointer 201' is mounted onthe bracket 77 and the. cam wheel is provided with 'a corresponding mark202 so that when the mark alines with the pointer the machine will he-inproper position with the sewing i'nstrumentalities 'at the completion ofthe stitch as hereinaf- Since the lock This is accon'iplished by varyingthe to elev'ated position to disconnect the clutch member from thepulley. A wheel 212 is keyed tothe' shaft so as to move therewith. Thiswheel, is provided with a rim 213'and with an ,annular groove 214. The

shoulder-216. The rim 213 is cut away rearwardly of the bridge 215 toform an open port 217 and the inner face of the rim -.pivotally' mountedupon this lug by means is curved at this point to form a cam portion218. A pin ion the sleeve 211 is arranged to extend over the rim 21 soas to bear against the same when the clutch rod is' released, and as theshaft rotates in the directionof the arrow Fig. 15) is arranged to enterthe cut away portion 217 and be struck by the shoulder 21s as shown. Apart in the rim 213 adjacent and in front of the shoulder 216 is movableto form a pivotal member 2'20, pivoted at 221 on the ijwheel andprovided with a portion 222- adapted to abut against the bottom of a cutaway recess in the wheel so as to limit the inwardmovement of 220. Aleaf spring 223 secured to the wheel and bearing upon' tlieipart 222 ofthe pivotal member is arranged to hold the pivotal member in theposition shown.

The wheel 21-2v is provided with a brake surface 224 separated from the.rim 213 by means of a flange 225. The bracket 29 has formed thereon a.lug 226 adapted to sup port ahrake band ZQT, the brake band being of 'a.bolt 22b. The ends 229 of the brake ,band are connected by means of atie bolt ,230, and the brake band is normally congtracted by means of aspring 231 on the .tie :bolt hearing, at one end against the end of the.brake band and at the other end against an adjustable nut A pair oflinks 233 arepivotally connected with the ends of the brake band to forma togglejoint, the coniiection to the brake band being made by pin andslot connections 231i, 235, while the center jointof the toggle isformed by a pin 236 on the sleeve 211.

-The operation of this mechanism is as follows: When the treadle isdepressed the clutch rod 208 and the wedge 206land the sleeve connectedtherewith will be lowered against the tension of the spring 210 so as ito throw the clutch member 20linto en gagement with the belt pulley tostart the ma:

chine. This wilhmove the parts to posi- ',tion shown in Figs. 18 and 19witlrthe' g'pin separated a slight distance from the itimfllB and withthe toggle links straighttined so as to expand the brake hand againstvthefi' tension of ,the' spring 231. It the rim and groove extend nearlyaround the. rivheel and terminate in a bridge 215 forming treadle be nowreleased for the purpose of stopping the machine, the spring 210 willforce the clutch rod and the sleeve 211 connected therewith upwardly soas to cause the pin 219 to bear againstthe rim 213. The pin will bearagainst the rim and ride over the same including the pivotal member 220,(the spring 223 being narrow enough to clear the pin as shown in Fig.18) until the cut away portion reaches the pin. The spring 20 will thencause the pin to snap into the groove 2H, the cam portion 218 assistingin throwing the pin into the groove if the parts should stick. As soonas the pin snaps .into the groove and is moved upwardly, the wedge 206will also move upwardly so as to disconnect the clutch member, and at.the same time the upward movement of the pinQSG will break the toggle233 so as to permit the sprin 931 to contract the brake band and applythe brake. The pin and ,slot connections between the toggle members andthe brake band permit the spring to perform its braking actionunimpeded. It will therefore be seen that as the pin 21$) enters thegroove 21% the clutch will be disconnected and the brake band applied tobrake the machine against the momentum of its moving parts, and thecgagementof the pin 219 with the shoulder 216 will positively arrest themachine in apredetermined position as shown in Fig. 19. \Vhen themachine is again to be started, the treadle'is jdepre sscd to lowertlietrcadlc rod 208 whe'nftliepin 219 i snap past the pivotal member andtheibrake will be thrown out of action. It will therefore be seenthat,this stopping mechanism is constructed to stop the machine in apredetermined position, and that the brake is applied before thepositive stop comes into action so as to slow down the machineandprevent shock. It will also be seen that the matic mechanism isarranged to stop the machine with the parts or instruinelitalities inposition to permit removal of the work.

The presser-foot is at this time released and it may be raised by thepresser-foot treadle so as to permit the sole to be placed in positionon the work support 129.41nd if the presser-foot treadle is nowreleased, the 'work will be clamped against'the work supportby thetension of tl'ielightspring151. The machine can now be started bydepressing the clutch treadle and the operation will be as follows Thepresser-foot actuating lever will immediately be actuated by leaving theportion {1 of the presser-foot cam groove b -t'o apply the increasedtension on'the presserfoot and to lock the presser-foot under suchincreased tension. It will be noted that the cam portion 9 is relativelyshort so that the presser-foot actuating lever will be operatedimmediately after the machine is started, to apply the increasedpressure and to lock the presser-foot under such increased pres- The awlmoves upwardly and the;

sure. needle lifter and shuttle also move for clearance purposes and toplace the shuttle in position to take the loop. At the time the awl willbe ready to penetrate the work, the

presser-foot will have been placed and locked under increased tension soas to furni slii'a rigid abutment against the piercing action of theawl. After the awl has reached the limit of its piercing stroke, thefeed slide is moved to the left to feed the work. Before the feedcommences however, the presser-foot is released by the cam portion 2? sov as to permit the awl and the'work to slide between the'presser-footand the work support, both the presser-foot and the worl'c support beingstationary in this machine.-

to original position. Meanwhile the looper and the thread holder havebeen operated to place the thread in position, and the take up memberhas moved upwardly a slight distance to relieve the tension and closethe thread-lock, and when the needle is in its lowest position thethread is placed around the needle hook. The needle now moves upwardlyto draw a loop of thread through the work, the take-up member movingupwardly and giving up its thread, and the thread is taken by the lifteror spreader and placed on the shuttle which begins to move to take thethread. As the thread is delivered to theshuttle, the needle movesforwardly a slight distance todisengage its hook completely from thethread, and thereafter backwardly to the limit of its backward strokesoas to move or back it completely out of the-way of the thread in orderto be discharged therefrom, the take-up member moves down to take up andset the stitch, the thread-lock being closed to lock or clamp the threadduring this take'up and stitclrsetting movement of the take'up member.During the latter part of the stroke of the take-up member, the lock ismoved to permit the. take-.up member to draw thread from the supply, theamount of thread drawn or measured varying autoprior constructions.

- matically in accordance with the thickness of the stock. This cycle ofoperations com.- pletes a stitch.

By referring to Fig 17 it will be noted that at the completion ofthestitch, which is indicated by the line designated Machinestops, allthe parts are in position to permit removal of th work. The take-upmember is down to its lowest limit and'conseq'uently the thread-lock isopen to release the thread; the presser-foot is released so as I topermit it to be raised; and the awl and needle are out of the work (itbeing remembered that the awl and needlehave an idle movement forclearance before they enter the work). It will be noted therefore thatthe work can be removed at the completion of the stitch, and it isunnecessary to partially complete another stitch or to back up themachine after the completion of the stitch in order to permit theremoval of the work. This obviously has great advan' tages. i

The machine can be provided with indicating means designated by 201 and20:2, whereby the operator may position the parts manually by turningthe hand wheel 200, the machine being provided with an ordinary clutch,it being remembered that when the indicating parts 201 and 202 coincide,

the machine parts will be in position at the completion of the stitch,and at such a point the work may be removed. The machine is however.preferably provided with automatic stopping mechanism for automaticallystopping the machine at this point, such mechanism being'shown in Figs.13, 19 and 20 and hereinbefore described. \Vith i such a constructionafter the treadle is released the machine, will be stoppedautomatica'lly at the completion of the stitch,

and the parts will then be in position to permit the removal of thework. The operator may therefore remove the work without releasing hlShold on the shoe, since it is merely necessary for him to release'the.clutch' treadle and thereafter depress the resser-foot treadle so thatthe work can be removed, the treadles, being preferably placed, closetogether and sideby'side. By raisin the presser-foot,- the thread-lock,(being at this time open to release' the thread) will be further opened,due to its connection with the presser-foot, so that the thread will becompletely released. When the machine comes to a stop and the work hasbeen removed, the machine is position to rece ve a new piece of workwithout requiring repositioningof the parts asin It is only necessaryfor the operator to raise the presser-foot by the treadle, which leavesboth of his hands izo free for the manipulation of the work, and

he can then start the machine by simply depressing the clutch treadle,when the ma chine will start at the beginning of a stitch. It will thusbe seen that in' accordance with this invention a large amount of timewillbe saved by cutting down to a minimum the time required to removeand position the work. Since the machine is stopped at the completion-ofthe stitch no unfilled hole will be left in the work, but the laststitch will be completed. re;

The machine is very much simplified and the number of parts have beenvery much reduced, as compared with prior constructions, by condensingcertain of the mecha nisms and by combining the functions of others.Thus the take-up and thread-lock are constructed so as to perform thefunctions of a thread measuring mechanism, the lock itself is operatedby the take-up, and a simple actuator shaft and cam groove are providedfor the take-up member the lock and the thread measuring means. Theautomatic adjustment of the thread measuring means in accordance withthe thickness of the stock is accomplished bya simple direct connectionbetween the thread-lock and the presser-foot. The entire mechanism istherefore operated through the medium of three cam wheels. The inventiontherefore results in a machine having all the functions of-the priorcomplicated constructions with a decreased number of moving parts, andthe resultant stitch obtained by this construction is very much moreaccurate than in the prior constructions, since the thread is alwayslocked until the stitch has been set,

thus enabling the lock to be set a uniform distance from the face of thework.

The work feed mechanism and the thread controlling mechanism are notclaimed in this application, but in copending applications, Serial Nos.(338,024 and 638,026, filed July 11, 1911, since become patents numbered1,134,035 and 1,032,303, respectively.

It is obvious that various changes may be made in the details ofconstruction without departing from this invention, and it is thereforeto be understood that this invention is not to be limited to thespecific construction shown and described.

Having thus described the invention what is claimed is:

1. In a sole sewing machine, the combination of a work support, apresser-foot, an awl, a needle, a shuttle, thread controlling mechanismincluding a thread-lock, and ope 'atingmeans including a drive shaft,constructed to be stopped, while moving in normal operatingdirection,with the stitch completed, with the awl and needle out of the work, andwith the thread controlling :mechanism in position to release thethread,

so as to permit removal of the work.

2. In a sole sewing machine, the combination of a work support, apresser-foot hav ing locking means, an awl, a needle, a shuttion ofstitch forming mechanism including i a, needle, an awl, threadcontrolling mecha- .nlsm including a thread-lock, a work sup- ;port, amovable resser-foot, means toforce.

the pressersfoot against the work'on the work support and to lock saidPresser-fruit,-

and Operating means, including a drive shaft, constructed to be stoppedwhilemoving in normal operating direction, with'the stitch completed,with the awl and needle out of the iwork with the presser-foot unlockedand with the thread-lock open and the thread released to permit removalof the Work.

4. In a sole sewingv machine, the combination of'stitc'h formingmechanismincluding a..needle, thread controlling mechanism including athread-lock, a work support, a

movable-presser-foot, means to force said pre'sser-foot against the workon the work support with a normally lightpressure,

means to increase said pressure at intervals and to lock saidp'resser-foot when the pressure has been increased, and means wherebythe machine may be stopped while moving in normal operative direction,at the time when the stitch forming mechanism has completed the stitch,with the awl and needle out of the work with the presser-foot releasedand with the thread-lock open to permit removal of the work. 1

5. In a sole sewing machine, the combination of a work support, apresser-foot. an awl, a needle, a shuttle, thread controlling mechanismincluding a thread-lock, actuatand stopping mechanism drive shaft,

adapted to automatically arrest the parts,

while the shaft is moving in normal operative direction with the stitchcompleted, with the awl and needle out of the work, and with the threadcontrolling mechanism in position. to release the thread, so as topermit ing means for said members, incli'iding aping mechanism adaptedto arrest the parts, while the shaft 1s moving n normal opera- I tivedirection, with the stitch completed,

with the presser-foot released, with the awl and needle out of the work,and Withthe thread'controlling mechanism in position torelease'thethread, so as to permit removal of the work.

7. Ina sole sewing machine, the combination of a'work support, apresser-foot, an awl, a needle, a shuttle, thread controlling mechanismincluding a thread-lock, actuatiiigmeans for the awl, needle, shuttleand thread controlling means, including a drive sshaft, means foroperating and locking the pre'sscr foot, and stopping mechanism adaptedto automatically arrest the parts,

-,While the shaft is moving in normal operative direction at thecompletion of the stitch withthe awl and needle out of the worlgwiththethread-lock open to release the: thread, and with presser foot releasedto permit removal of the work.

8'. In a sole sewing machine, the combinaion-0f stitch formingmechanism, a take-up member, means 'for operating said take-up memberconstructed to cause it to first takeup and set the stitchand then drawthread from the supply, and means for stopping the machine with thetake-up member at the limit of its take-up stroke and with the stitchcompleted.

9. Ina sole sewing machine, the combina- "tion of a Work support, apresser-foot havng locking means, an awl, a needle, thread controllingmechanism including a thread lock, and operating means, including adrive shaft, constructed and arranged to unlock I the presser-foot andcause the thread-lock to release the thread at the completion of thestitch, and during the normal operative movement of the drive shaft,with the awl and needle out of the work.

10. In a sole sewing machine, the combination of a Work support, aresser-foot hav-' ingelocking means, an awl. a needle, threadcontrollingmechanism including a take-11p member and a coiiperating thread-lock,and

.operating means, including a drive shaft,

constructed and arranged to unlock the Presser-foot and cause thethread-lock to release the thread at the completion of the stitch, andduring the normal operative movement of the drive shaft, with the takeupmember at the limit of its take-up stroke and 'theawl and needle out ofthe work.

11. In a sole sewing machine, the combination of stitch formingmechanism, a work support, a movable presser-foot, means to force theresser-foot against the work on the work support with a normally lightpressure, means to increase said pressure at intervals and to lock saidpresser-foot when the pressure has been increased, and means forstopping the machine at the completion of the stitch, during the normaldirection of movement, with the Presser-foot unlocked.

12. In a sole sewing machine, the combination of stitch formingmechanism, a.

work support, a movable resser-foot, thread controlling mechanismincluding a thread lock, means connecting said presser-t'oot and saidtlllEild-lOCi constructed to open the thread-lock to release the threadwhen the presser-ioot 1s ralsed, means tor locking said presser-foot.and means for stopping the machine, during its normal direction ofmovement, with the presser-foot released.

13. In a sole sewing machine, the combination of stitch formingmechanism, a

work support, a movable presser-foot, thread controlling'll'lQChtlIllSlTl including a thread-lock adapted to lock the threadwhen p the stitch is taken up and set and release the thread when drawn,means connecting said presser-foot and said thread-lockconstructed toopen the threz'id-lockto release the thread when the presser-foot israised,

and means for stopping the machine, dur

ing its normal direction of movement, with the presser-footreleased.

14. In a sole sewing machine, the combi-- nation of stitch formingmechanism, a work support,a movable presse'r-foot, thread con trollingmechanism lncludmg a thread-lock,

means connecting said presser-foot and said thread-lock constructed toopen the threadlock to release the thread when the presserleased, andmeans for raisingsaid presserfoot and for opening ,said look through theconnection to sald presser foot.

16. In a sole sewing machine, the combination of stitch formingmechanism, a work support, a movable presser-foot, thread controllingmechanismincludmg a thread-lock,

means connecting said resser-foot and said thread-lock constructedtoopen the threadlock to release the thread when the presserfoot israised, means for locking and unlocking said presser-foot at intervalsduring the operation of the machine, and operating mechanism constructedto position the parts at the completion of the stitch, duringits normaldirection of movement, with the presserfoot unlocked.

17! In a sole sewing machine, the combi nation of stitch formingmechanism, a work support, a movable presser-toot, thread controllingmechanism including a thread-lock connected with said presserst'oot,means for locking and unlocking said resser-foot at intervals during theoperation of the "ma chine, operating clianism constructed topositionthe partsat the completion of. the

said presser-foot and said thread-lock constructed to open thethread-lock to release the thread when the presser-foot is raised, meansfor locking and unlocking said presser-foo't at intervals during theoperation of the machine, and operating mechanism constructed toposition the parts at the completion of the stitch, during its normaldirection of movement with the awl and needle out of the work and withthe presserfoot unlocked.

19. In a sole sewing machine, the combination of a work support, apresser-foot, an awl, a needle, thread controlling mechanism including athread-lock connected with said prcsser-foot,-means for locking andunlock ing said presser-foot at intervals during the operation of themachine, operating mechanism constructed to position the parts at thecompletion of the stitch with the aw] and needle out of the work andwith the presserfoot unlocked, and means for raising said )resser-footand for o enin said lock through the connection to said presser-foot.

20. In a sole sewingmachlne, the combination of stitch formingmechanism, a work support, a movable presserefoot means to force theresser-foot against the Work on the work support with a normally lightpressure, means to lncrease said pressure at intervals and to lock saidpresser-foot when the pressure is released, means for unlocking saldresser-foot when the stltch-formmg mechanism is out, of the work, and"means for stopping the machine when the presser-foot is unlocked, so asto permit the Presser-foot to be raised to remove the Work.

21. In'a sole sewing machine, the combination of stitch formingmechanism, awork support, a movable presser-foot, means to. force thepresser-foot against the Work on the work support with a normally lightpressure, means to increase said pressure at lntervals and to lock saidpresser-foot when .the pressure is'relea'sed, means for decreasing theincreased pressure and for unlocking said presser-foot when thestitch-formlng mechanism 1s out of the work, and means for stopping themachinewhen the presserfoot is unlocked and, the pressure thereon isreleased, so as topernn-t the presser-foot to be ralsed to remove theWork.

In testimony whereof We affix our, signatures in presence of twowitnesses.

GEORGE L. 'CORGORAN. GEORGE A. DOBYNE. AUGUST R. SCHOENKY. \Vitnesses: vI

MARIE E. PAUCK, J. H. BRUNINGA.

